Augmented Reality (AR) technology have been recognised as an effective experience enhancer with a broad application range. It is challenging to explore such potentials in the area of learning and teaching by utilising AR features in behavioural stimulation and monitoring. In this study, the author aims at exploit AR technology to institute a system for cognitive development. The principle goal of such playful learning system is to improve the overall ability of toddlers to function in social environments through cognition forming and behavioural redirecting. This paper introduces an interactive training game that assists children between two and seven years old to develop their cognitive model through intuitive theory-based educational AR gamification. A pilot study implements Montessori training theory is described in this paper.